| Efficiently locating vehicle license plates based on vertical line detection | |
|---|---|
| 學年 | 88 |
| 學期 | 1 |
| 發表日期 | 1999-08-22 |
| 作品名稱 | Efficiently locating vehicle license plates based on vertical line detection |
| 作品名稱（其他語言） | |
| 著者 | Horng, Wen-bing; Wu, Mong-tsung; Fan, Chun-hai |
| 作品所屬單位 | 淡江大學資訊工程學系; 淡江大學運輸管理學系 |
| 出版者 | |
| 會議名稱 | 第十二屆電腦視覺、圖學暨影像處理研討會 |
| 會議地點 | 臺北縣, 臺灣 |
| 摘要 | A fast method for locating vehicle license plates is proposed in this paper. This approach is primarily based on the observations that the intensity contrast between license plate background color and symbol color is high and that symbol edges are clustered in the plate area. A simple edge detection method based on first derivatives is applied to a car image such that the binary image containing only vertical edges is obtained. Then possible plate regions could be located from the horizontal and vertical projections of the binary image. No preprocessing, such as image enhancement and noise filtering, is required. In addition to its simplicity and fastness, the proposed method is less sensitive to illumination changes of the plate. The proposed method was experimented with 117 diverse car images on a Pentium-133 processor. The system successfully located 116 license plates in 0.2 second on an average. |
| 關鍵字 | |
| 語言 | en |
| 收錄於 | |
| 會議性質 | 國內 |
| 校內研討會地點 | |
| 研討會時間 | 19990822~19990824 |
| 通訊作者 | |
| 國別 | |
| 公開徵稿 | |
| 出版型式 | |
| 出處 | 第十二屆電腦視覺、圖學暨影像處理研討會論文集(CVGIP99)，頁728-733 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/37475 ) |
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